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| author | Gleb Natapov <gleb@redhat.com> | 2009-02-23 12:57:11 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-03-24 11:03:11 +0200 |
| commit | 71450f78853b82d55cda4e182c9db6e26b631485 (patch) | |
| tree | f197d4a944382137eb1cff9f3e4f075491bb8321 /virt/kvm | |
| parent | c5bc22424021cabda862727fb3f5098b866f074d (diff) | |
| download | linux-71450f78853b82d55cda4e182c9db6e26b631485.tar.gz | |
KVM: Report IRQ injection status for MSI delivered interrupts
Return number of CPUs interrupt was successfully injected into or -1 if none. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'virt/kvm')
| -rw-r--r-- | virt/kvm/irq_comm.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c index be8aba791554..c516d618d389 100644 --- a/virt/kvm/irq_comm.c +++ b/virt/kvm/irq_comm.c @@ -48,7 +48,7 @@ static int kvm_set_ioapic_irq(struct kvm_kernel_irq_routing_entry *e, static int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e, struct kvm *kvm, int level) { - int vcpu_id; + int vcpu_id, r = -1; struct kvm_vcpu *vcpu; struct kvm_ioapic *ioapic = ioapic_irqchip(kvm); int dest_id = (e->msi.address_lo & MSI_ADDR_DEST_ID_MASK) @@ -73,7 +73,7 @@ static int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e, vcpu = kvm_get_lowest_prio_vcpu(ioapic->kvm, vector, deliver_bitmask); if (vcpu != NULL) - kvm_apic_set_irq(vcpu, vector, trig_mode); + r = kvm_apic_set_irq(vcpu, vector, trig_mode); else printk(KERN_INFO "kvm: null lowest priority vcpu!\n"); break; @@ -83,14 +83,17 @@ static int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e, continue; deliver_bitmask &= ~(1 << vcpu_id); vcpu = ioapic->kvm->vcpus[vcpu_id]; - if (vcpu) - kvm_apic_set_irq(vcpu, vector, trig_mode); + if (vcpu) { + if (r < 0) + r = 0; + r += kvm_apic_set_irq(vcpu, vector, trig_mode); + } } break; default: break; } - return 1; + return r; } /* This should be called with the kvm->lock mutex held |